Re: Kernel 2.5.55 failed to boot with ACPI support

[Alessandro Suardi <ALESSANDRO.SUARDI@oracle.com>]

Andrew Grover wrote:

> > From: Ole J. Hagen [mailto:olehag_2001@yahoo.no] 
> > I just wanted to inform that kernel-2.5.55 failes to boot 
> > when ACPI support is 
> > compiled in the kernel. 
> > 
> > I have following configuration; Dell Optiplex GX-240, Pentium 
> > 4 (1.5 GHz), ATI RAGE 128.
>
> How exactly does it fail?

My brand new Dell Latitude C640 oopses on boot in 2.5.56 if I
 have CPU_FREQ config'd in. ACPI without CPU_FREQ is okay - well,
 it screws my framebuffer screen (what 2.4.21-pre3 doesn't) when
 the ACPI code does its bootup printk's, but after that the
 screen recovers.

Another thing is that /proc/acpi/fan is empty despite my setting
 of CONFIG_ACPI_FAN=y.

Oh, and one more - /proc/acpi/battery/BAT0/state claims

charging state: unknown

 as well as

present rate:       0 mA
remaining capacity: 0 mAh
present voltage:    0 mV

 and the info file, when cat'd, prints a few times

dsobject-0188: *** Warning: Buffer created with zero length in AML


Back on topic, if you're interested I can rebuild my 2.5.56 with
 CPU_FREQ and write down the backtrace of the oops.

--alessandro